YUCCA MOTH AND YUCCA POLLINATION. 157 
Fig. 2. —a, outline of receptaculum seminis of Pronuba 
synthetica; b, do. of Pronuba maculata; c, do. of Prodoxus 
decipiens, all drawn to same scale as figure 1; d, enlarged 
spicule showing ventral groove and a transverse section of 
same. 
PLATE 41. 
Fig. 1. — Pronuba synthetica: a, 2 with wings expanded, 
hair-line showing natural size; 6, lateral view of the 
head and neck, more enlarged, showing a purely lateral 
view of the trophi, not in pairs to avoid confusion. The 
maxillary palpus (mp) with its tentacle (mt); tongue 
(¢); labial palpus (/p); base of antenna (at); eye (e); 
front trochanter (/¢). 
Fig. 2. — Pronuba synthetica: a, larva, from side; 0, ? 
chrysalis, ventral view; c, do., lateral view — nat. size in 
hair-line; d, lateral; e, dorsal view of anal joints of 3; 
S> J, do. of 9; h, dorsal view of 2nd and 3rd joints of 
abdomen —all more enlarged. . 
PLATE 42. 
Fig. 1.— Pronuba synthetica: a, enlarged view genitalia 
of ¢ from side; 0, do., from behind ; ¢, anal joint of female 
with ovipositor exserted, dorsal view ; d, do., lateral view; 
e, ovipositor, dorsal view, still more enlarged; jf, do., from 
side. 
Fig. 2.— Pronuba maculata: a, tip of female abdomen ; 
bjo, basal joint of ovipositor; do, terminal joint do.; 
ov, oviduct ; mp, max. palpus; mé, maxillary tentacle; ¢, 
tongue; gs, claspers of male from side; gp, do. from be- 
hind; pr, front wings showing arrangement of spots in 
two of the more common forms —hair-line showing nat. 
size. \ 
PLATE 43. 
Fig. 1.— Prodoaus intermedius: a, anal abd. joint of 
female —xX10; d/o, basal jt. ovipositor— X40; 8, its 
sculpture ; éjo, terminal jt. do.; ov, oviduct. 
